JP4521664B2 - Package type compressor - Google Patents

Description

  The present invention relates to a packaged compressor in which a compressor body, a motor, and an air tank are housed in a package box.

  As shown in FIG. 6, a conventional package type compressor includes a compressor body 1 that generates compressed air, a motor 2 that drives the compressor body 1, and an air tank 3 that stores the compressed air in a package box 4. The package box 4 is formed with an intake section 5 and an exhaust section 6 for ventilation (Patent Document 1). Each device in the package box 4 has a configuration in which the air tank 3 and the motor 2 are installed at the lower part of the two-stage mount, and the compressor main body 1 is installed at the upper part.

  The compressor body 1 is of a reciprocating type, and has a crankcase with a built-in crankshaft and compression parts 1a, 1b, 1c arranged on the upper part of the crankcase, and the compression parts 1a, 1b, 1c A piston is reciprocally stored. Pistons in the compression portions 1a, 1b, and 1c are connected to a crankshaft in the crankcase, and a flywheel 7 is connected to the outside of the crankcase. The flywheel 7 is connected via a V pulley 8 and a V belt 9 provided on the shaft of the motor 2. When the motor 2 rotates, the flywheel 7 is rotated via the V belt 9, and the crankshaft and piston of the compressor body 1 are rotated. To generate compressed air. The compression units 1a, 1b, and 1c are connected to the air tank 3 through cooling pipes, and the compressed air generated by the compression units 1a, 1b, and 1c is stored in the air tank 3.

  The flywheel 7 is provided with a plurality of fins 7a on the inner side, and the cooling air is sent to the compressor body 1 side when the flywheel 7 rotates. An inner air inlet 4a of the package box 4 is opened in a circular shape at a portion facing the flywheel 7, and an air intake duct is formed on the outer side surface of the package box 4 and the horizontal side surface so as to surround the inner air inlet port. 5a is provided. The intake duct 5a sucks air from two horizontal directions and supplies it to the internal intake port 4a. On the other hand, the exhaust duct 6a is formed to open in a lattice shape on the rear side of the refrigeration air dryer 10 provided in the upper part of the package box 4.

With such a configuration, when the flywheel 7 is rotated by operation, the package compressor sucks outside air through the intake duct 5a and the internal intake port 4a, and the cooling air 11 cools the compressor main body 11; It hits the front door 4b and is dispersed in different directions. The cooling air 11 that has flowed to the upper portion is exhausted out of the package box 4 via the upper exhaust duct 6a. The cooling air 11 flowing in the lower part cools the air tank 3 and the motor 2, and then is discharged from the upper exhaust duct 6 a to the outside of the package box 4 through the side surface of the flywheel 7 for ventilation.
JP 2004-251147 A

  In the conventional package type compressor having the above-described configuration, the cooling air 11 flowing in the lower part cools the air tank 3 and the motor 2, and then passes through the side surface of the flywheel 7 from the upper exhaust duct 6 a to the package box 4. The air is exhausted and ventilated, but when it goes to the upper exhaust duct 6a, it is sucked into the flywheel 7 again or mixed with the cooling air 11 from the flywheel 7 and flows again to the air tank 3 and the motor 2 side. Sometimes. In some cases, the temperature of the cooling air 11 rises due to repetition, and the cooling effect is impaired. In addition, the cooling effect on the compressor main body 1 is reduced by merging with the flow of outside air taken in from the flywheel 7, and the temperature in the entire lower part inside the package box 4 is also increased.

  In addition, in the conventional package type compressor, when the noise at the rear of the compressor is measured, the value tends to be higher than the value in front of the compressor. This is because the operation sound of the compressor body 1 is transmitted to the outside of the package box 4 through each dedicated duct for ventilation. In addition, when the compressor is installed with the rear surface close to the wall surface, there is a problem that the wall surface reflects the noise of the rear part and is transmitted to the front surface, which causes an adverse effect on the noise side.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a packaged compressor that can efficiently cool a compressor body, a motor, and a package box.

In order to solve the above problems, a packaged compressor according to the present invention includes a compressor main body that generates compressed air, a flywheel that is connected to the compressor main body and has fins for blowing air, and the fly through a belt. A motor coupled to the wheel for driving the compressor body; an air tank for storing compressed air compressed by the compressor body; a package box for housing the compressor body, the motor, and the air tank; An intake duct that is provided at the rear of the package box and sucks outside air by rotation of the flywheel in the package box; an exhaust duct that is provided at the top of the package box and discharges the inside air of the package box; The motor and the air tank provided inside the package box and sucked into the package box from the intake duct In the package-type compressor provided with an exhaust guide for guiding the cooling air after cooling to the exhaust duct, the exhaust guide, between the package box and the radial direction of the left and right sides of the flywheel It is arranged in a duct shape in the vertical direction with respect to the two spaces formed, and one end is opened as a suction port at a lower position inside the package box and above the position of the motor, and the other end as an exhaust port. and configured to communicate with the exhaust duct and the by cooling air provided a suction preventing cover prevented from being sucked into the flywheel, the flywheel of the exhaust guide covers a lower portion of said flywheel Cooling air that has been sucked in with the side face facing the outer diameter as a guide is guided to the compressor body, and further the motor and Serial sucks cooling air to the air tank has finished cooling from the inlet, characterized in that to guide to the top of the exhaust duct.

  ADVANTAGE OF THE INVENTION According to this invention, the package type compressor which can cool the inside of a compressor main body, a motor, and a package box efficiently can be provided.

Five embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the package-type compressor according to the first embodiment of the present invention includes a compressor body 1 that generates compressed air, a motor 2 that drives the compressor body 1, and a compressor body 1. An air tank 3 that stores compressed air, a package body 4 that houses the compressor body 1, the motor 2, and the air tank 3, and an intake air that is provided at the rear of the package box 4 and sucks outside air into the package box 4. Duct 5a, exhaust duct 6a provided at the top of package box 4 for exhausting the inside air of package box 4, and intake duct 5a provided inside package box 4 and sucked into package box 4 from motor 2 or An exhaust guide 12 for guiding the cooling air 11 after cooling the air tank 3 to the exhaust duct 6a is provided. That is, the exhaust guides 12 are installed on both sides as seen from the front so as to avoid the flywheel 7 and the internal intake port 4a in the path where the cooling air 11 after cooling the air tank 3 and the motor 2 is directed upward. The exhaust guide 12 has a height from the upper part of the air tank 3 and the motor 2 to the upper exhaust duct 6a. Other configurations are the same as those of the prior art shown in FIG.

  According to the present embodiment, the cooling air 11 that has finished cooling the air tank 3 and the motor 2 can be guided to the upper exhaust duct 6a by the exhaust guide 12, and can be sucked into the flywheel 7. Efficient ventilation can be performed without being affected by the flow of the cooling air 11 from the flywheel 7. Therefore, the temperature rise of the whole lower side inside the package box 4 can also be suppressed.

(Second Embodiment)
As shown in FIG. 2, the package type compressor of the second embodiment of the present invention cools the air tank 3 and the motor 2 at the lower part of the flywheel 7 in addition to the configuration of the first embodiment. This is a configuration provided with a suction prevention cover 13 for preventing the subsequent cooling air 11 from being sucked again. The suction prevention cover 13 has a semicircular shape so that the cooling air 11 can be guided to the exhaust guide 12, and both ends thereof are positioned at the inlet of the exhaust guide 12.
According to the present embodiment, the cooling air 11 whose temperature has risen is efficiently exhausted without being repeatedly supplied as cooling air, and the cooling performance in the package box 4 can be improved.

(Third embodiment)
As shown in FIG. 3, the package type compressor according to the third embodiment of the present invention is provided with a chamfered portion 12a facing the compressor body 1 in the exhaust guide 12 provided in the first embodiment. It is a configuration.

  According to the present embodiment, the exhaust guide 12 also serves as a cooling guide for efficiently applying the cooling air 11 from the flywheel 7 to the compressor body 1, thereby suppressing an increase in temperature of the compressor body 1. it can.

(Fourth embodiment)
As shown in FIG. 4 , the package type compressor according to the fourth embodiment of the present invention has a silencer 14 attached to the inner surface, the outer surface, or both surfaces of the exhaust guide 12 provided in the first embodiment. It is a configuration.

  According to the present embodiment, the compressor body 1, the motor 2 and the package box 4 can be satisfactorily cooled, and the frequency of the operating sound of the compressor body 1 transmitted to the exhaust guide 12 is measured. By attaching the silencer 14 that absorbs the sound, a noise reduction effect can be obtained and noise reduction at the rear of the compressor can be achieved.

(Fifth embodiment)
A packaged compressor according to a fifth embodiment of the present invention has a configuration that combines the first to fourth embodiments. That is, as shown in FIG. 5, an exhaust guide 12 having a chamfered portion 12a facing the compressor body 1 and having a silencer 14 attached to at least one of the inner and outer surfaces, and a suction prevention cover 13 covering the lower portion of the flywheel. It has.

According to the present embodiment, it is possible to provide a packaged compressor with a low temperature rise and low noise.
In addition to the present embodiment, the packaged compressor of the present invention can be configured by appropriately combining the first to fourth embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS The structure of the package type compressor of the 1st Embodiment of this invention is shown, (a), (b), (c) is the figure which looked at the inside of a package box from the upper, front, and right side, respectively. The structure of the package type compressor of the 2nd Embodiment of this invention is shown, (a), (b), (c) is the figure which looked at the inside of a package box from the upper, front, and right side, respectively. The structure of the package type compressor of the 3rd Embodiment of this invention is shown, (a), (b), (c) is the figure which looked at the inside of a package box from the upper, front, and right side, respectively. The structure of the package type compressor of the 4th Embodiment of this invention is shown, (a), (b), (c) is the figure which looked at the inside of a package box from the upper, front, and right side, respectively. The structure of the package type compressor of the 5th Embodiment of this invention is shown, (a), (b), (c) is the figure which looked at the inside of a package box from the upper, front, and right side, respectively. The structure of the conventional package type compressor is shown, (a), (b), (c) is the figure which looked at the inside of a package box from the upper, front, and right side, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Compressor main body, 1a, 1b, 1c ... Compression part, 2 ... Motor, 3 ... Air tank, 4 ... Package box, 4a ... Internal inlet, 4b ... Front door, 5 ... Intake part, 5a ... Intake duct , 6 ... exhaust part, 6a ... exhaust duct, 7 ... flywheel, 7a ... fin, 8 ... V pulley, 9 ... V belt, 10 ... air dryer, 11 ... cooling air, 12 ... exhaust guide, 12a ... chamfering part , 13 ... Suction prevention cover, 14 ... Silencer.

Claims (3)

A compressor body that generates compressed air;
A flywheel connected to the compressor body and having fins for blowing air,
A motor connected to the flywheel via a belt and driving the compressor body;
An air tank for storing compressed air compressed by the compressor body;
A package box that houses the compressor body, the motor, and the air tank;
An intake duct that is provided at the rear of the package box and sucks outside air into the package box by rotation of the flywheel;
An exhaust duct provided at an upper part of the package box for discharging the inside air of the package box;
A package-type compressor, comprising: an exhaust guide provided inside the package box, which is sucked into the package box from the intake duct and cools the motor and the air tank, and guides the cooling air to the exhaust duct. In
The exhaust guide is arranged in a duct shape in a direction perpendicular to two spaces respectively formed between the left and right side surfaces of the flywheel in the radial direction and the package box, and one end is used as a suction port. the upper part is opened from the position of the box inside the and the motor a lower position, and configured to communicate with the exhaust duct and the other end as the outlet, and the cooling air the cover at the bottom of the flywheel By providing a suction-preventing cover that prevents the air from being sucked into the flywheel, the cooling air that has been sucked into the compressor body is guided and cooled by using the side surface of the exhaust guide that faces the outer diameter of the flywheel as a guide, and further, Cooling air that has finished cooling the motor and the air tank is sucked from the suction port and guided to the exhaust duct in the upper part. Package-type compressor according to claim.   The package-type compressor according to claim 1, wherein the exhaust guide includes a chamfered portion at a portion facing the compressor body.   The package type compressor according to claim 1, wherein the exhaust guide includes a silencer on at least one of an inner surface and an outer surface.

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